Aduco, Dr., 23-25. Alcohol, effect of, on jellyfish, 54. on cress plant, 56. on students, 58. on typesetters, 60. on soldiers, 61, 63. INDEX during cholera epidemic, 100. on Bum and Tipsy, 102. crimes under influence of, 206. Amoeba, where found, 39. changing shape, 39. method of multiplication, 42. its structure, 46. development of, from egg, 47, 48. Attention, why valuable, 186. effect of, on neurons, 187. Attention, how increase power of, 196, 197. how interfered with, 197, 198. through spinal cord, 79. Backbone, in amphioxus, 46, 51, 53. Balance board, explanation of, 20. Bertino, accident recorded, 16. history of experiments with brain Bicycle race, effect of, on eyesight, 35. Blood supply, laws of, to brain, 18. how improved, 21. Brain, description of, 10. relation of, to skull, 13. causes of increased blood supply studied by experiments on Bertino, 16, 20. condition of, during sleep, 18. exercise of, 20. in monkeys, 192, 193. fatigue of, 25. Brain, effect of brain work on muscular power, 27. method of rest of, 27-29. of pigeons after flight, 35. relation of, to cord, 71. value of its white and gray sub- stance, 73. different sizes of, 74. of bee, tested, 109. how to drive blood from, 124, 125. effect of noise on, 198. brain of, after death, 170. Bum and Tipsy, during epidemic, 102. Carpenter, Dr., 135, 155, 161, 185, 215, Cells, single-celled and many-celled ani- center of activity, 70. changed by work, 110. affected by alcohol, 207, 208, 210. 204. fatigue of, shown in birds, 108-110. condition of, during sleep, 126, 127. power of one set over another set, affected by emotions, 137–139. power to remember, 182. when rested, 184. how to mark them, 185. influence of attention on, 185. work of, hindered by noise, 197, 198. affected by suggestion, 241, 242. Noise, why objectionable at night, 20. 229, 230. Nucleus, affected by work, 110. |